2016/01/11 by K. Bąkowska, K. Bakowska, Bakowska, K. +2
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astrophysical Phenomena and Observations #FOS: Physical sciences #Gamma-ray bursts and supernovae #Solar and Stellar Astrophysics (astro-ph.SR) #astro-ph.SR
paper · pdf · doi:10.48550/arxiv.1601.02289
10 pages, 5 figures, 2 tables, accepted by Acta Astronomica
arxiv created 2016/01/11 · openalex publication_date 2016/01/11 · arxiv updated 2016/01/12 · openalex created_date 2020/03/13 · openalex updated_date 2026/07/28
We present the analysis of hot spot brightness in light curves of the eclipsing dwarf nova IY Ursae Majoris during its normal outburst in March 2013 and in quiescence in April 2012 and in October 2015. Examination of four reconstructed light curves of the hot spot eclipses showed directly that the brightness of the hot spot changed significantly only during the outburst. The brightness of the hot spot, before and after the outburst, was on the same level. Hereby, based on the behaviour of the hot spot, IY UMa during its normal outburst follows the disk-instability model.